Light signal



o. s.. FIELD LIGHT SIGNAL Aug. 9, 1927. 1,638,625 u INVENTOR which is fieXibleand-Which Willbeadap'table Y 20 complish theab'ove" enumerated objects to-1 e I' 35 thel unit.k

Patented Aug. 9, 1927:'

i oscaa s. nimm, 'on inesatta :eoneneng nnvs'rfl .innsnx intenti: sientan@ ""1 been found that` in order 'to satisfactorily f 5 project a beam' of light inthe daytime,V itis necessary to have very accurate focusing-f' of the light :emitting device,` andgfit is `also necessary to be able to accurately-align the beam along the path of travelof` the vehicle 19 which is-to'be signaled. It` has'alsovvbe'en"v {"found that it is necessaryto setup a multi.- plicity of combinations of: coloredv4 lights -to convey' the variousinformation necessary in' railroad operation 'andiit thereforeC becomes desirable to have' alight signalingsystem to the various light combinations necessary."v I The :present-'invention has been produced 'with these problems in mind and will acgether With other desirable objects, which Will more. clearly appear inthe. accompa-- nying specificationfandlclaims.

f Referring' to the figures, 'I have shown in 25 Figure 1V a' verticalv cross section' of'a light;

Y Yunitvvhich is aV part'of the complete signal.

v '1n Figure 2l haveshown in isometric pro- Vjectio'n',an assembly of threejoffvtheseflight Y nnitsin a vertical row, this being-one ofthevv 30 desirable forms vin railrodew-Ork.y

- FigureBis a rear view' of he flightunitg f With rthe cover removed,Figure 4 is a hori-v zontal sectionnthroughrthe esame, and Figure 5 isa detaill view illustrating a portion'ofl Similar referencecharactersv refer to simi-l lar parts in each of the severalfvievvsf i' From a general inspection of the figures,- VV it will be apparent that Ihave Vprovided a 4o self contained flight' projecting unit whichv maybe built up into clusters or' combina tions of various '-'fforms'asf' desiredby settingf the -light units-,in different typesof back-I Y' grounds which haveapertures 'provided to` 4.5" accord with the* formation is found'necessaryf if 'will y,now 'brieiiy p ""it'sel-f andV then 1describehovvitfis /assenfbA -bledjintothecompleted signal unit. Y

l Referring first'to Figures 1, 3 and 4,the' light unit consists' of a'case l1 which isv pro-l videdjvv'ith a partition@ having an annular @recess SWhich is adapted-to carrygan inner# of the lightsithat l lens 4, properlyheld'inplace by means of-y 55 'vl/supportingclipsV and screws 6. f-

' ich@ naar @nac-eine ma its further paez? vided With a recess '7i adaptedtoicarry and' .i outer lens8 Whichisheld inplaceby means `of thehoodring 9.151 The rhood rin'g`9iis f1 ce;l

equipped with' a v.hood r10 (see.f`Figure 2.) which acts :as a shield for1 thelensand vp're-.

vents 'light from strikingthe :surface offthe y glensfand'bein'g reflected in'ajdownvvard di- A erection. lThe"lenses'4 Vand 8 form what is fslrnovvn as a' doublet combination,` Whichfhas Y a'focalpoint at`11 and-'is'ofsucha character 'ff r`that'when a'source Vof light 4is placedatthis 'I *focal p point -it vvill A project faQsubstantially 'Y i i parallel beam "of light vasindicated by the "dot and dashV line S12. ItisV 'apparent that the'color ofthe beam 'ofglight projectedfmay tire length and 'j av carrier-"member 16'`fis adapted toffreely/4 slide {overfthis stud;

The "carrier member 16j is'A provided vvithfk a will 'be 'apparent from this constructionv that ibe readily'modified-byfipreperly.tinting the f I i 1llfl'llerlens 4.- v

' slot 17- intof-Which ris inserted1 aknurled i nut' 18, v'yhich -isl-adapted-to fit *threaded"stud1 4 and fsnuglyffit the vslot/"17. vIt

c arrier'membe'ry 16 is supportedonfstud 14 n in'4 such'a `manner that itmay vble-,freely Y rotatedaround the sameor may be'rais'ed orlvvered byvrr'otation of thevnutk '18. AV j lrnurled nut19 is provided to lock'the memvber A16l onstud '14 in. any desired Vposition.

Carrier-member l'fhas-a vsecond* 4stud 2()v umountedxtherein inzgs-uhfamannerfthatitl. Y

kmay' freely E'sl-ide therethrough in.V a horizon` Atal planeas shown.'v f The stud't20 isprovided Withkeyway 21 and eispr'evented froinro? ff tating" inQQarrierv member; 16" byf meansofi u y alv set 'screvv 22. passing v through member '-16 K v into key'vvgay 2157A furthers'lot 23 .is pro-ff ff 100 'Y 2 nut 24 is inserted,thi snutbeing adapted t'o l y y g i Y -l-'fftthe'threladonV stud20 and snugly iit in 1 describe thejlightunit`r l vided' 'in carrier member 161m 'vvhichknur'led travel baclrvv'ardsiorf forwards in accordance 1'05 vv'iththe:V direction of rotation fofthefnut studV w20 is .provided With'i'a ,supporting bracketk 26 "which carriesl v"a suitable type `of virtuelly provided 11?;1l1ole-foaine lieve provided whereby the fi le,me uf lelie Combinationle f ordgelntorbe l eblerte, determinevvhen the Vfilament coincides .with

v:idee/e, neadlevioe bein'gedeptedfrto eheokzthe locati .lient eloiigitlie focal axis fof-- ,the i lens; oombinie-toii.; The 'device 'for determii i ing *the loeetion; of the.- ileilent on the-'axis f eorilei'sts oi f "filament may be; vie'wed. This peepliole'is 1 otv Siiilioiet fljeiigthto properly align the file-'- -iiieil heretliroiigli: and. iev edjusted- `to coini `eide.' ivitli the. fooeliixie 'oi-'the lens, combiner' l .seen that, While lookingy f'tioii@ I twillib@ xfthroiiglifthel elle the filament Y'Hm-y" be leitlierihor ontellyoryertioelly until "iteeii e Se. in tbeieenter-of the Peepeighe Amelirbexr1 6 ielookedin, poejtonfby mee-neet `1 9 Atlierehvrigidly.v looking the fil-w enelongat d l handlllStablQ-L Shut-'3291? 341. 3ft-the (outer "en, of t'e-.liienilier-g 'llhieehutterfhae emall aperture 35;,approximately through il 'l Site centen A, I Surface disposed eten angle .5P-to the shut-ter' ies-povded: ail-@iris Vireiie V inem @on iro'ugli; aperture 37 lin the 111em by; :means o; stud e 38 and erixaligedf toi projectv hori- G lghtb it? right angles:

bar proieotedonsthegjwhitegenr- 28v mayY be readily"=1n0ved"'i1iiiiy'l'plaw thereby making it possible to accuratefly@lo-VA v cettey the vfilament? lon Athe focal poilit'b'f "the the fooal-poiiit5f1-lievefprovided Sighting de -y e n ofthe filament'onthe'ifocalaxisofl 1theleneeoinbinatioii;the other device being leifrangled to f determine the proper location o f'lth Se memloer, arranged to;l ft. lieaid-Of' StudV A,I4 'andi after-being catedthereon,` locked in placeby,

Mem predefinite a shield el, edeiotedtofproteet the eye fromjtlie glare of, theillendelitf 28, -eliid iS: also provided with' a their be: Properly. located-- on thel di` the' lens *Combination f After.

Y e toelefektheposition-ofthe file@ ment -elong Vthe fooely exis, Ill have#ProvidedY second sighting devicerwliich coinpiiisesrf finengrber; 33 which is equipped? d; Preferably blade :to 'olotein maoiif trash tortillewhite` st lrfliaeel' K This. ei viewed f romfthe rear, ot the ter shutter 34l1aszbeen; properly adjusted it is permanently locked -iiiv rposition by ineens of a'diopof solder. f hen `then*filament 28 is zit-its proper location eloee'the ioeel exis, oi the leesv Combination', tl'ieim'zi'ge ofthe AVfilament projected will acclb'lackline 36, ftherebyindieatin'g to the the foclpoint'of the lens combination. Agfterthelziinp has Vbeen*properly focused,

leekA mit '25.;is tghtenedandtlie focusing light. unit has been com I operation of the Pleted.'V

Gase

.fthroughwhich Wires may be. brought tothe lampi and is further, provided with" e proper 'Y Covel' 4l ziclapted to shed the rain'etnd. Vprotlle', cover may be lockedin place.

f`vided-with aihesp 42 endstaiple 43,. soth'at In Order Atoproperly mount the unit in light-signal Acombinati 0115,' all,that isvfnecesy sary isftofurnish suitable backgrolinds or Supports. "In Figure 2i, lhgwfeindjiciteclfat 44, Vone-, forni of background' which; may be neel being adapted to' supporti threey off the `7o lc iirlately straddle or coincidevithY the Yvertioper-ltortbathe has moved liisrlight into;VV i Y Vlil-is providedivth aperture 40 S5 LA i light unitsin 'Vertical v roW.\ /hfile this f. Y

partieiilerfform is shown, it is apparent .that a. nultitudeof other forms maybe made and any combination of lights, setup.y

-' The light unit'sjaremountedon thebeck- :ground 44'by means of adjusting screws 45,

46, 47 and '48-reSpeCtivelyL ltr-will beseen thfzitth-ese sorewsere arranged tov be thread ed: into.` the'ibachgrfouiidlll: yand that the 'Screws'lg and 48 yare vpassed through thferiin` Y 4Q andthe case liuto the background, yand l v .ythtthescrews 45 anclletgpass V through Vthe Y f background and are' in ,intimate Contact with the back siirnceof ,the rii'n 49i; Bythisfar-" e; rangement i" itl is f' app arent thatby backing Loli?"sereiviidfand'moving eoig'evvl 45 forward, Y

thelg'ht unit maybe, ,'tippeddownwaird, f'

manner, 'Y similarlyl maniplilziting the sc reifvs 4,7 and- 48, the "benlninay be moved 1n ahorrzontal plane; :the light, unit thereby rigidlyf holdingthei light unit in' its lpositio'nfIn order the t fthe; )p'eiatory 1 may Vvice is provided' oneafch-lifghtxunitr Refer-` has; been; properly aligned screws 45, l.46, 4Z@

:caiising ,it, to ,project iteV benlningn do'ivn- Ward direction, or by reversing the operaproperly determinewhere the bealn'of; light :isi being projected-, aA yt ele'scop ic sightngde;

ring 'iiowgalsoto Figure-f5, this'device icomprises; an extension 'lug 5 1 outstanding from the case l and hvng je. small peep'holefZ front i'iiii 49;, oftheE case l is in aperture "53 V`eoferrzinged that the,exie.of theeperture V` find -o'f--theipeepholeo are, parallel to the focal, axis Of; the flens-combination in the light unit, Aand; are of- Suoli (dimensions that:y Y

theyfrepiiesentthe spread-'or englefofdi- Wlv vergence of the light bea-in, usually about 6;

in practice. It will be apparent that the Y light unit, will be properlyadjusted'v when the point or pointto'vvards Which'it is de l Y' ture 5a .sired' to direct thesignal beam arevisible through the peep yhole 52- andthe aperf From the above description it'vvill be seen 'that yi im@ 'provided a Seif-mnainediighi: unit whichis fully equipped Withadjusting .l and sighting devices to make it entirely in- Y of the invention.

dependent of any other light vunit,'together ywith means of mounting this light unit in Vframes to form desirable signal combinations. ylVhile I'have shovvnone specific de-V sign and form of light unit and mounting,

a it is apparent that various modiiicationsmay be-made Without departing fromV thespirit lVliat'Iclaimisz-f, l Y, l; 'A vlight signal 'comprising a` Casey asource of light in said case, optical means supported by` said case for projecting a'beam of light fromsaid source, a first stud rigidly attached to said case, acari-ier member pi'oi `vided with a hole freelyvreceiviiig said stud,

means for locking `the carrier member iii adjusted position with respectvto said first stud, a secondI stud Vattached'to said light sourcel and mounted in said 'carrier member for movement rela-tive thereto at right angles to said first stud, means for locking said second stud in adjusted position With respect Vto, said carrier member, andvsighting means receiving light-from said source ,whereby said source may be accurately locatedatthe f ocal'point of said optical means, a portion vof said sighting means being' supported on said first stud.V

, 2. AV light signal comprising al case, a

source of light in said case, optical means Y supported by said case for projecting a beam of light fromsaid source, a first stud rigidly attached to said case, a. carrier member provided with a hole freely receiving said stud means for locking the cairier'niember in ad-LV justed position with respect to said first stud,

a secondstud attached to saidlight sourcef and mounted in said carrier member for ,movement vrelative thereto at right angles to said first stud,me'a'ns for' locking said.

taining asource oflight, afleiisfitted in said secondst'ud in -adj posit-'ionfvvith respect to saidcarrier member, yanda'sightiinfig device v v'mountedv on lsaid first stud vfor determining When said'source occupies a predeteriiiin'ed ,A position Withrespect' to said optical means;

` 3.;A- light signal comprisingV a case',v,a' j. source off light in said case, optical` means supported by said-case for projecting a beam of light from said source, a first stud rigidly aufy attached tofksaid case, a carrier member' mounted ori-said stud, and arranged to move longitudinally onsaid stud and lto svving about the stud as an axis, means-for clamping said carrier member in a'djustedposition with respect to said first stud, a second stud L.

provided with a keyvvay and passing freely ir lthrough said carrier member, aset screw in porting said light-i source.

, 1i.V A Vlight signal comprising afcase" con case for projecting a'beaml oflightl from said` Y' source, a stud rigidly attached to said case,

means mounted fon saidv stud for supporting said light source and permitting adjustment thereof in three planes, and 'a sighting device *v n f supported byv said studV and disposed. on the-; v optical axis of said lens for 'determining l' vvheiisaidlight source'lies iiisaid airisf f 5. A light signal comprising a ease, ai. Y source of lightin said ca se, a lens-supported by said case for'projectiiig a beamof light from said source, a stud rigidly attachedy to adjustment thereof in-'three' planes, a first,

sighting ldevice mountedon saidstudwith K' i so L said case, means mounted on said studpfor Y supporting saidfliglit source and permitting 90 ,.l i

its axis disposed vin the opticalaxis of said lens, and a second sighting device mounted s in saidj case and'liavii'ig its axis atiight angles tothe axis of said first device and intersecting the aXisfof said first device at?v the focal point of said' lens" In testimony whereof, I havesigiied my name to this specification? oscila s. Fiati). 

